/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.skywalking.plugin.test.mockcollector.entity;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;

import java.lang.reflect.Type;

public class MeterItemsSerializer implements JsonSerializer<MeterItems> {
    @Override
    public JsonElement serialize(MeterItems meterItems, Type type, JsonSerializationContext jsonSerializationContext) {
        final JsonArray serviceMeterItems = new JsonArray();
        meterItems.getMeterItems().forEach((serviceName, meterItem) -> {
            final JsonObject meterJson = new JsonObject();
            meterJson.addProperty("serviceName", serviceName);
            meterJson.addProperty("meterSize", meterItem.getMeters().size());
            final JsonArray meters = new JsonArray();
            meterItem.getMeters().forEach(meter -> {
                meters.add(new Gson().toJsonTree(meter));
            });
            meterJson.add("meters", meters);;
            serviceMeterItems.add(meterJson);
        });

        return serviceMeterItems;
    }
}
